Honeywell HM512W1005 - Page 34

OPERATION
AND SERVICE
TrueSTEAMHumidicationSystem69-2285EF—01
32
No. of
Service LED
Blinks
Fault Description Auto-Recoverable? Steps to Fix
(Performed Only By Professional HVAC Technician)
10 The heater relay
failedtoturnon.
No PressandholdtheGobuttontoclearthefault.1.
Initiateahumiditycall.2.
Ifthefaultreturns,replaceTrueSTEAM.3.
12 Temperature of the
electronic circuit
boardistoohigh.
Yes,systemwill
returnto“Ready”
if fault no longer
existsinonehour.
Makesureventilationholesinthecoverareclearof1.
obstruction.Makesure1footofclearanceismaintained
aroundthecover’sventholes.
EnsureTrueSTEAMisinstalledinalocationwithconditioned2.
air34°Fto104°F(1.1°Cto40°C).
Turnhumidistatoffandallowtimeforelectronicboardtocool.3.
Thiscouldtakeupto2hours.
TurnhumidistatonandpresstheGobuttontoreset.4.
ConrmhumiditycallstartsbycheckingifHumidifyinglight 5.
ison.
AllowTrueSTEAMtorun.Checkforsteamleaksaroundtank6.
andventilationholes.
Ifthefaultreturns,replaceTrueSTEAM.7.
13 Tankfailedtodrain. No
CAUTION: Water in tank may be hot (>140°F [60°C]).
PresstheDrainbutton.1.
Iftankfailstodrain,waitforwaterintanktocool.Ensuretank2.
wateriscoolbeforeproceeding.
Oncecool,followthetankcleaningsteps.3. See “Manual
Cleaning Cycle” on page 24.
ReassembletankandpresstheGobuttontoreset.4.
Ifthefaultpersists,replacesolenoidvalve(#50027997-001).5.
14 Heater failed to
boilwater.
Yes,systemwill
returnto“Ready”
if fault no longer
existsinonehour.
Followthetankcleaningsteps.1. See “Manual Cleaning Cycle”
on page 24.
ReassembletankandpresstheGobuttontoreset.2.
Ifthefaultreturns,replaceTrueSTEAM.3.
15 Noairowsensed
insupplyduct.
Yes,systemwill
returnto“Ready”
if fault no longer
existsinonehour.
Ensure optional add-on air proving device is installed and 1.
wiredcorrectly.See “Make Add-On Air Proving Decision” on
page 18 for proper wiring.
UnplugTrueSTEAM,andremovecover.2.
EnsureDIPswitchesaresetcorrectly.(DIP4down,DIP5up.)3.
ReconnectcoverandpluginTrueSTEAM.4.
PressandholdtheGobuttontoclearthefault.5.
Ifthefaultpersists,replacetheairprovingdevicebeingused.6.